Regenerative furnace.



J. RBULEAUX.

REGENEBATIVE FURNAOE. Y

APPLICATION FILED 00T. 23,1913. 1,098, 171 y Pana May 26, 1914 2 SHEETS-anni' 2.

31am/Wto@ UNTTED STATES PATENT orrron'.

JOSEF BEULEAUX, F PITTSBURGH, PENNSYLVANIA, ASSIGNOR. T0 ALEXANDER LAUG-HLIN, 0F PITTSBURGH, PENNSYLVANIA.

REGENERATIV-E FURNACE. 4

V T0 all 'mimo/1, it may concern Be it known that I, JOSEF REULEAUX, of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented cer-v 'tain new and useful Improvements 1n Rewill enable others skilled in the art to which it appertains to make and use thesame.

The object of this invention 1s to pre ventdust and other foreign substances fromimpairing the life or usefulness of regenerative furnaces, tion before the waste gases reach checker-work'practically all dust is tively object is to fully absorb the heat of the waste gases so that the full value thereof may be utilized in heating incoming gases.

In the accompanying drawings, Figure l is a longitudinal' sectional view of a regenerative furnace constructed in accordance with my invention. Fig. 2 is a horizontal sectional view on line 2-2, Fig. 1. Fig. 3 is a section on line 3-3, Figpl. Fig. 4 is a section on line 4 4, Fig. 3. Fig. 5 shows the reversing valve.

Referring to the drawings, 1 designates the furnace which is the Siemens type of open-hearth. At each end of this furnace is a vertically arranged Hue o r passage 2 which, as is well known, isl used alternately for the inlet and outlet of gases. cording to the means shown in the drawings the fuel is introduced at points 3. I may the effecuse oil or natural gas, or coke-oven gas, or

producer gas, coal tar or coal.` In fact, my present improvements have been specially designed with reference to the employment of powdered coal as fuel, since there is'ordinarily a relatively large proportion of dust in fuel of this character, and this coupled with the sand, rust, scale, lime-dust and fine ores, suspended ,in outgoing gases, will quickly clog the checker-'work in regenerative chambers, and hence shorten the life of the furnace and necessitate expensive repairs.,

Each ue 2 is in itself a dust pocket, but it'opens directly into a lateral prolongation 4 which may more properly be regarded as the dust pocket. I have show n partitions 2a in lues 2, but these are netessential and have nothing todo with my invention.l Diand` the invention, 'such asl and according to my invenf removed therefrom. And a further' the latter.

Specification of Letters Patent. Patented May 26, 1.914. Application led October 23, 19.113. Serial N o. 796,889.

rectly above and leading upwardly from this dust pocket is a vertically disposed passageway 4 through which the outgoing gas must travel upwardly to the top of a regenerative chamber before passing downwardly through checker-work 5, and thence to the stack. By this tortuous passage of the gas foreign substances are removed therefrom before the checker-work is reached. Preferably the vertically-disposed passage L? is at the longitudinal center of the regenerative chamber, and has checker-work 5 on eachA side thereof, butif desired, the checkerwork may be on one side alone. Within the vvertically disposed passage 4a I locate spaced-apart partitions'q, which are preferably solid and which serve to absorb a large proportion of the outgoing heat before -reaching the top of the checker-work. A

central dividing wall 7 extends transversely of these partitions 6, beneath the roof of the regenerative chamber, so as to equally divide Of course, if desired, checkerwork may be substituted for the solid partitions but `the latter are preferable. checker-work 5 is shown as supported by. longitudinally-disposed supports 'l The f.

8, resting on'the bottom of the regenerative chamber..

'The compartments containing the checkerwork have separate ues 9 'leading therefrom to the stack connection 10, and in each of these ues 9 1S a valve 12 for regulating customary a reversing valve 13 controls the inlet and outlet to 'the respective ends of the furnace. i

In practice, the waste gases after. leaving.

the inflow and outflow of the gases.' As 1s the furnace travel first downwardly throughl flue 2' and then horizontally into the slag and dust pocket within the regenerative chamber where'm they expand -and evenlyl distribute themselves, affording ample opportunity for the discharge of refuse matter before and during their upward course in the passage 4:3 4toward the top of the regenerative chamber. In this passage through the channels formed between the.

ysolid partitions 6 the latter are Well heated.

From the top of the regenerative chamber the gasespass downwardly through the checker-work and into the collecting- 'lues4 below and thence through the intermediate dampers 12 to the reversing valve 13, and

thence to the stack.l

The slag and dust pocket within the regenerative-chamber and the upwardly exl tending passage between it and the checkerwork, prevent, .any undue transmission of the heat to the atmosphere, and greatly increase the eliiciency of the regenerative chamber in bringing the inlowing air or gas to a high temperature.

The advantages of my invention Will be readily appreciated by those skilled in the art. It will be observed that by means thereof and regardless of the character of the fuel employed, the full value of the Waste heat may 'bevutilizedy for preheating the incoming air or gas and without danger of yclogg'fingnp or otherwise endangering the checker-work'.

I claim as my invention:

l. A furnace having a descending flue at its end, a regenerative chamber having a slag and ust pocket intowhich said flue opens, an'upwardly-extending flue passage above and leading from said pocket and through which the waste heat is designed to ascend, and checker-Work through which the waste heat is designed to descend.

2. Affurnace having a descending Hue at its end, a regenerative chamber having a lag and dust pocket opening laterally from and in the same vertical plane as said flue, an upwardly extending flue passage above and leading from said pocket and through which the waste heat is designed to ascend,

.and checker-'Work through which the waste -heat is designed to descend.

3. A furnace havingla descending flue at its end, a regenerative chamber having a lslag and dust pocket intowhich said -liue opens, an upwardly-extending passage leadling from said pocket and through which the waste heat is designed to ascend, said upwardly-extending passage having a series. of narrow channels, and checker-work through which the waste-heat is designed to descend after leavingsaid channels.

4. A. furnace having a descending flue at its end, a regenerative chamber having a slag and dust pocket into which said Hue opens, an upwardly-extending passage leading from said pocket and through which the waste heat is designedto ascend, said up- Wardly-extending passage having a series of solid partitions extending transversely thereof forming narrow channels, and checker-work through which the Waste-heat is designed to descend after leaving said channels.

5. A furnace having a descending flue at Aits end, a regenerative chamber having a slag and dust pocket into which said flue chamber having two compartments at 'op-4 posite sides of said passage, checker-w01l in said compartments, outlet flues leading from said compartments, and separate valves for said lines.

ln testimony whereof, I have signed this specilication in the presence of two subscribing witnesses.

JOSEF REULEAUX. Witnesses: l FRANCIS S. MAGUIRE,

MILDRED'P. IMIRIE. 

